elog.c File Reference

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Functions
static void	elog_lock (elog_main_t *em)
static void	elog_unlock (elog_main_t *em)
void *	elog_event_data (elog_main_t *em, elog_event_type_t *type, elog_track_t *track, u64 cpu_time)
static void	new_event_type (elog_main_t *em, uword i)
static uword	find_or_create_type (elog_main_t *em, elog_event_type_t *t)
word	elog_event_type_register (elog_main_t *em, elog_event_type_t *t)
	register an event type More...
word	elog_track_register (elog_main_t *em, elog_track_t *t)
	register an event track More...
static uword	parse_2digit_decimal (char *p, uword *number)
static u8 *	fixed_format (u8 *s, char *fmt, char *result, uword *result_len)
u8 *	format_elog_event (u8 *s, va_list *va)
u8 *	format_elog_track (u8 *s, va_list *va)
void	elog_time_now (elog_time_stamp_t *et)
static i64	elog_time_stamp_diff_os_nsec (elog_time_stamp_t *t1, elog_time_stamp_t *t2)
static i64	elog_time_stamp_diff_cpu (elog_time_stamp_t *t1, elog_time_stamp_t *t2)
static f64	elog_nsec_per_clock (elog_main_t *em)
void	elog_alloc (elog_main_t *em, u32 n_events)
void	elog_init (elog_main_t *em, u32 n_events)
static uword	elog_event_range (elog_main_t *em, uword *lo)
elog_event_t *	elog_peek_events (elog_main_t *em)
	convert event ring events to events, and return them as a vector. More...
u32	elog_string (elog_main_t *em, char *fmt,...)
	add a string to the event-log string table More...
elog_event_t *	elog_get_events (elog_main_t *em)
	convert event ring events to events, and return them as a vector. More...
static void	maybe_fix_string_table_offset (elog_event_t *e, elog_event_type_t *t, u32 offset)
static int	elog_cmp (void *a1, void *a2)
void	elog_merge (elog_main_t *dst, u8 *dst_tag, elog_main_t *src, u8 *src_tag, f64 align_tweak)
static void	serialize_elog_event (serialize_main_t *m, va_list *va)
static void	unserialize_elog_event (serialize_main_t *m, va_list *va)
static void	serialize_elog_event_type (serialize_main_t *m, va_list *va)
static void	unserialize_elog_event_type (serialize_main_t *m, va_list *va)
static void	serialize_elog_track (serialize_main_t *m, va_list *va)
static void	unserialize_elog_track (serialize_main_t *m, va_list *va)
static void	serialize_elog_time_stamp (serialize_main_t *m, va_list *va)
static void	unserialize_elog_time_stamp (serialize_main_t *m, va_list *va)
void	serialize_elog_main (serialize_main_t *m, va_list *va)
void	unserialize_elog_main (serialize_main_t *m, va_list *va)

Variables
static char *	elog_serialize_magic = "elog v0"

Function Documentation

void elog_alloc	(	elog_main_t *	em,
		u32	n_events
	)

Definition at line 452 of file elog.c.

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static int elog_cmp ( void *  a1, void *  a2  )

static

Definition at line 607 of file elog.c.

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void* elog_event_data	(	elog_main_t *	em,
		elog_event_type_t *	type,
		elog_track_t *	track,
		u64	cpu_time
	)

Definition at line 65 of file elog.c.

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static uword elog_event_range ( elog_main_t *  em, uword *  lo  )

static

Definition at line 488 of file elog.c.

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word elog_event_type_register	(	elog_main_t *	em,
		elog_event_type_t *	t
	)

register an event type

Parameters

em	elog_main_t *
t	elog_event_type_t * event to register

Returns

type index

Warning

Typically not called directly

Definition at line 104 of file elog.c.

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elog_event_t* elog_get_events

(

elog_main_t *

em

)

convert event ring events to events, and return them as a vector.

Parameters

em	elog_main_t *

Returns

event vector with timestamps in f64 seconds

Note

sets em->events to resulting vector.

Definition at line 552 of file elog.c.

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void elog_init	(	elog_main_t *	em,
		u32	n_events
	)

Definition at line 466 of file elog.c.

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static void elog_lock ( elog_main_t *  em )

inlinestatic

Definition at line 46 of file elog.c.

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void elog_merge	(	elog_main_t *	dst,
		u8 *	dst_tag,
		elog_main_t *	src,
		u8 *	src_tag,
		f64	align_tweak
	)

Definition at line 625 of file elog.c.

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static f64 elog_nsec_per_clock ( elog_main_t *  em )

inlinestatic

Definition at line 443 of file elog.c.

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elog_event_t* elog_peek_events

(

elog_main_t *

em

)

convert event ring events to events, and return them as a vector.

Parameters

em	elog_main_t *

Returns

event vector with timestamps in f64 seconds

Note

no side effects

Definition at line 509 of file elog.c.

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u32 elog_string	(	elog_main_t *	em,
		char *	format,
			...
	)

add a string to the event-log string table

Often combined with hashing and the T4 elog format specifier to display complex strings in offline tooling

Parameters

em	elog_main_t *
format	char *
VARARGS

Returns

u32 index to add to event log

Definition at line 534 of file elog.c.

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void elog_time_now

(

elog_time_stamp_t *

et

)

Definition at line 408 of file elog.c.

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static i64 elog_time_stamp_diff_cpu ( elog_time_stamp_t *  t1, elog_time_stamp_t *  t2  )

inlinestatic

Definition at line 437 of file elog.c.

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static i64 elog_time_stamp_diff_os_nsec ( elog_time_stamp_t *  t1, elog_time_stamp_t *  t2  )

inlinestatic

Definition at line 431 of file elog.c.

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word elog_track_register	(	elog_main_t *	em,
		elog_track_t *	t
	)

register an event track

Parameters

em	elog_main_t *
t	elog_track_t * track to register

Returns

track index

Note

this function is often called directly

Definition at line 198 of file elog.c.

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static void elog_unlock ( elog_main_t *  em )

inlinestatic

Definition at line 54 of file elog.c.

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static uword find_or_create_type ( elog_main_t *  em, elog_event_type_t *  t  )

static

Definition at line 85 of file elog.c.

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static u8* fixed_format ( u8 *  s, char *  fmt, char *  result, uword *  result_len  )

static

Definition at line 249 of file elog.c.

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u8* format_elog_event	(	u8 *	s,
		va_list *	va
	)

Definition at line 296 of file elog.c.

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u8* format_elog_track	(	u8 *	s,
		va_list *	va
	)

Definition at line 399 of file elog.c.

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static void maybe_fix_string_table_offset ( elog_event_t *  e, elog_event_type_t *  t, u32  offset  )

static

Definition at line 560 of file elog.c.

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static void new_event_type ( elog_main_t *  em, uword  i  )

static

Definition at line 72 of file elog.c.

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static uword parse_2digit_decimal ( char *  p, uword *  number  )

static

Definition at line 222 of file elog.c.

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static void serialize_elog_event ( serialize_main_t *  m, va_list *  va  )

static

Definition at line 792 of file elog.c.

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static void serialize_elog_event_type ( serialize_main_t *  m, va_list *  va  )

static

Definition at line 957 of file elog.c.

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void serialize_elog_main	(	serialize_main_t *	m,
		va_list *	va
	)

Definition at line 1038 of file elog.c.

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static void serialize_elog_time_stamp ( serialize_main_t *  m, va_list *  va  )

static

Definition at line 1020 of file elog.c.

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static void serialize_elog_track ( serialize_main_t *  m, va_list *  va  )

static

Definition at line 996 of file elog.c.

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static void unserialize_elog_event ( serialize_main_t *  m, va_list *  va  )

static

Definition at line 853 of file elog.c.

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static void unserialize_elog_event_type ( serialize_main_t *  m, va_list *  va  )

static

Definition at line 976 of file elog.c.

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void unserialize_elog_main	(	serialize_main_t *	m,
		va_list *	va
	)

Definition at line 1072 of file elog.c.

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static void unserialize_elog_time_stamp ( serialize_main_t *  m, va_list *  va  )

static

Definition at line 1028 of file elog.c.

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static void unserialize_elog_track ( serialize_main_t *  m, va_list *  va  )

static

Definition at line 1008 of file elog.c.

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Variable Documentation

char* elog_serialize_magic = "elog v0"

static

Definition at line 1035 of file elog.c.